Skate and method of manufacture

ABSTRACT

A skate including a tridimensional skate boot shell with a sole insert embedded in or received in the skate boot shell such that at least part of a thickness of the sole portion is defined under the sole insert, and a holder under the skate boot shell configured for retaining a ground-engaging skate element. The holder is connected to the sole insert by at least one fastener extending through the at least part of the thickness of the sole portion. A method of manufacturing a skate boot is also discussed.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority from provisional application No.61/979,725 filed Apr. 15, 2014, the entire contents of which isincorporated by reference herein.

TECHNICAL FIELD

The application relates generally to skates and, more particularly, toboots for such skates.

BACKGROUND OF THE ART

A skate typically has a skate boot and a ground-engaging skate elementsuch as a blade or a set of inline rollers attached to the underside ofthe boot. Typical “lasted” skate boots are made in a manner similar totraditional shoe making techniques. Small pieces having various shapesand form, typically made from different materials, are usuallysuperimposed on a last one by one, where they are worked to form theappropriate foot shape and secured via stitching, gluing, tacking, etc.Lasted skate boots are usually not identical to one another since theyare each individually made by hand.

It is also known to make a flat “sandwich” of the laminated layers ofmaterial of which the boot is to be made, with the sandwich ofinterconnected layers being put on the last and bent into shape. Howeverthe bending may induce stresses, particularly at the interface betweenthe layers.

It is also known to mold skate boots from relatively rigid plastic orcomposite material, as a monolithic shell or with sub-shells. Monolithicshell boots may tend to be overly rigid. For boot having sub-shells, theconnexion between sub-shells may be inadequate and/or induce stresses onthe skate boot.

SUMMARY

In one aspect, there is provided a method of manufacturing a skate bootshell, the method comprising: shaping a tridimensional outer sub-shellto define a first heel portion, a first ankle portion connected to thefirst heel portion, and two opposed first side portions extending fromthe first heel and ankle portions; shaping a tridimensional innersub-shell to define a second heel portion, a second ankle portionconnected to the second heel portion, and two opposed second sideportions extending from the second heel and ankle portions, the innersub-shell having an outer surface complementary to an inner surface ofthe outer sub-shell; and bonding the shaped sub-shells together throughlamination, the lamination being performed after the outer and innersub-shells are shaped, the lamination being performed with the innersub-shell in the outer sub-shell and with the outer surface of the innersub-shell in alignment with the inner surface of the outer sub-shell,the lamination including applying one or both of heat on the sub-shellsand pressure on one of the inner and outer sub-shells toward the otherof the inner and outer sub-shells, the other of the inner and outersub-shells resting against a mold surface.

In another aspect, there is provided a method of manufacturing a skateboot shell, the method comprising: shaping a tridimensional outersub-shell from a first material, including: providing at least one layerof the first material in a flat configuration, the first material beingin a formable state, forming the at least one layer to conform to a moldsurface, the mold surface defining a first heel portion, a first ankleportion connected to the first heel portion, and two opposed first sideportions extending from the first heel and ankle portions, pressing theat least one layer against the mold surface while heating the at leastone layer, and cooling the outer sub-shell, the cooled outer sub-shellretaining its tridimensional shape defining the first heel, ankle andside portions; shaping a tridimensional inner sub-shell separately fromthe outer sub-shell, the inner sub-shell being shaped to have a secondheel portion, a second ankle portion connected to the second heelportion, and two opposed second side portions extending from the secondheel and ankle portions, the inner sub-shell having an outer surfacecomplementary to an inner surface of the outer sub-shell; and bondingthe shaped inner sub-shell inside the shaped outer sub-shell with theouter surface of the inner sub-shell in alignment with the inner surfaceof the outer sub-shell.

In another aspect, there is provided a skate comprising: a skate boothaving a shell including: a tridimensional outer sub-shell made of afirst material, the outer sub-shell including a first heel portion, afirst ankle portion connected to the first heel portion, two opposedfirst side portions extending from the first heel and ankle portions,and a first sole portion connected to the first heel, ankle and sideportions, a tridimensional inner sub-shell received within and connectedto the outer sub-shell, an outer surface of the inner sub-shell beingcomplementary to an inner surface of the outer sub-shell, the innersub-shell being made of a second material different from the firstmaterial, the inner sub-shell including a second heel portion, a secondankle portion connected to the second heel portion, and two opposedsecond side portions extending from the second heel and ankle portions,and a tridimensional reinforcement sub-shell made of a third materialdifferent from the first and second materials and bonded inside at leastone of the inner and outer sub-shells, the reinforcement sub-shellincluding a third heel portion, a third ankle portion connected to thethird heel portion, and two opposed third side portions extending fromthe third heel and ankle portions; and a ground-engaging assemblyreceived along a bottom surface of the first sole portion and engaged tothe skate boot.

In another aspect, there is provided a skate comprising: atridimensional skate boot shell including a heel portion, an ankleportion connected to the heel portion, two opposed side portionsextending from the heel and ankle portions, and a sole portion connectedto the heel, ankle and side portions; a sole insert embedded in orreceived in the skate boot shell such that at least part of a thicknessof the sole portion is defined under the sole insert; and a holder underthe skate boot shell configured for retaining a ground-engaging skateelement, the holder connected to the sole insert by at least onefastener extending through the at least part of the thickness of thesole portion.

In a further aspect, there is provided a method of manufacturing a skateboot, the method comprising: providing a tridimensional skate boot shellhaving a heel portion, an ankle portion connected to the heel portion,and two opposed side portions extending from the heel and ankleportions, the skate boot shell having a sole insert embedded therein orreceived therein such that at least part of a thickness of the soleportion is defined under the sole insert; and attaching a holderconfigured for retaining at least one ground-engaging skate elementunder the skate boot shell by connecting the holder to the sole insertwith at least one fastener extending through the at least part of thethickness of the sole portion.

DESCRIPTION OF THE DRAWINGS

Reference is now made to the accompanying figures in which:

FIG. 1 is a schematic tridimensional exploded view of a skate inaccordance with a particular embodiment;

FIG. 2 is a schematic tridimensional exploded view of a boot shell ofthe skate of FIG. 1;

FIG. 3 a is a schematic front cross-sectional view of the boot shell ofFIG. 2, in accordance with a particular embodiment;

FIG. 3 b is a schematic front cross-sectional view of the boot shell ofFIG. 2, in accordance with another particular embodiment;

FIG. 4 is a schematic bottom view of a sole insert in accordance with aparticular embodiment;

FIG. 5 is a schematic tridimensional view of a sole insert in accordancewith another particular embodiment;

FIG. 6 is a schematic plan view of a flat material form to be shaped todefine an outer sub-shell in accordance with a particular embodiment,which may be used in a skate boot shell such as shown in FIG. 2;

FIG. 7 is a schematic tridimensional view of an outer sub-shell beingshaped in accordance with a particular embodiment;

FIG. 8 is a schematic tridimensional exploded view illustrating theshaping of the outer sub-shell of FIG. 7;

FIG. 9 is a schematic tridimensional exploded view illustrating theshaping of an inner sub-shell in accordance with a particularembodiment, which may be used in skate boot shell such as shown in FIG.2;

FIG. 10 is a schematic plan view of a flat material form to be shaped todefine a reinforcement sub-shell in accordance with a particularembodiment, which may be used in a skate boot shell such as shown inFIG. 2;

FIG. 11 is a schematic tridimensional view of a reinforcement sub-shellbeing shaped in a mold in accordance with a particular embodiment;

FIG. 12 a is a schematic tridimensional exploded view illustrating thelamination of the components of a skate boot shell such as shown in FIG.2, in accordance with a particular embodiment;

FIG. 12 b is a schematic tridimensional view illustrating the laminationof the components of a skate boot shell such as shown in FIG. 2, inaccordance with another particular embodiment;

FIG. 13 a is a schematic tridimensional view of a re-shaping press whichmay be used to reshape the boot shell in accordance with a particularembodiment;

FIG. 13 b is a schematic tridimensional view of a boot shell beingreshaped in the press of FIG. 13 a;

FIG. 14 shows a portion of a reshaped boot shell, in accordance with aparticular embodiment;

FIG. 15 a is a schematic side view of a toe cap and a front portion of askate boot shell, in accordance with a particular embodiment;

FIG. 15 b is a schematic side view of a toe cap and a front portion of askate boot shell, in accordance with another particular embodiment; and

FIG. 16 is a schematic bottom view of a skate boot shell and toe capsuch as shown in FIG. 15 a.

DETAILED DESCRIPTION

Referring to FIG. 1, a skate 10 is generally shown. The skate 10includes a skate boot 12 and a ground-engaging assembly 14 including aholder 15 and a ground-engaging element 17, which is shown as a blade.It is understood that the particular skate configuration shown here isprovided as an example only and that alternate configurations arepossible, including, but not limited to, other types of ground engagingassemblies such as roller skate ground engaging assemblies where theground engaging elements include rollers or wheels. The skate boot 12includes a boot shell 16 and a toe cap 18, 118, which in the embodimentshown is engaged to the boot shell 16. The boot shell generally includesa heel portion 16 a, an ankle portion 16 b connected to the heel portion16 a, two opposed side portions 16 c extending from the heel and ankleportions 16 a, 16 b, and a sole portion 16 d connected to the heel,ankle and side portions 16 a, 16 b, 16 c.

Although not shown, the skate boot 12 typically includes other elementsconnected to the boot shell 16, such as for example a tongue on thefront, an inner liner received inside the boot shell 16, a facing alongthe side edges including eyelets for receiving laces, etc.

Referring to FIGS. 2 and 3 a-3 b, the boot shell 16 generally includesinterconnected sub-shells, which in the embodiment shown include atridimensional outer sub-shell 22, a tridimensional inner sub-shell 24,and a tridimensional reinforcement sub-shell 26. The reinforcementsub-shell 26 is shown as being located inside of the inner sub-shell 24,but may alternately be located between the outer and inner sub-shells22, 24. In another embodiment which is not shown, two reinforcementsub-shells are provided, one between the outer and inner sub-shells 22,24 and one inside the inner sub-shell 24. In an alternate embodiment,the reinforcement sub-shell 26 is omitted.

The outer sub-shell 22 includes a heel portion 22 a, an ankle portion 22b connected to the heel portion and shown here as including an optionaltendon guard, two opposed side portions 22 c extending from the heel andankle portions 22 a, 22 b, and a sole portion 22 d connected to theheel, ankle and side portions 22 a, 22 b, 22 c. In a particularembodiment, the sole portion 22 d is formed from a separate pieceseamlessly connected or fused to the other portions, such that the outersub-shell 22, when the other portions are fused with the sole portion 22d, defines a one-piece tridimensional boot shape. In a particularembodiment, the outer sub-shell 22 forms at least part of the outersurface of the skate boot 12, and accordingly decorative features may beintegrated therewith and/or added thereto using any suitable connectionmethod.

The inner sub-shell 24 is received within the outer sub-shell 22, andconnected thereto. In the embodiment shown, the inner sub-shell 24 isdirectly connected to the outer sub-shell 22; as discussed above, theinner sub-shell 24 may alternately be connected to the outer sub-shell22 through a reinforcement sub-shell received therebetween. The outersurface of the inner sub-shell 24 is complementary to the inner surfaceof the outer sub-shell 22. The inner sub-shell 24 thus also includes aheel portion 24 a, an ankle portion 24 b connected to the heel portion24 a and two opposed side portions 24 c extending from the heel andankle portions 24 a, 24 b. In the particular embodiment shown, the innersub-shell 24 also includes a sole portion 24 d connected to the heel,ankle and side portions 24 a, 24 b, 24 c, such as to define atridimensional boot shape. In a particular embodiment, the innersub-shell 24 is made in one piece. Alternately, it can be made from twoor more interconnected pieces.

In a particular embodiment, the outer and inner sub-shells 22, 24 aremade of different materials. In a particular embodiment, the innersub-shell 24 is made of foam sufficiently rigid to maintain itstridimensional shape, and the outer sub-shell 22 is made of materialmore rigid than that of the inner sub-shell. Examples of suitablematerials include EPP foam for the inner sub-shell 24 and athermoplastic ionomer resin such as Surlyn® (registered trademark andproprietary composition of E. I. du Pont de Nemours and Company),optionally with reinforcement inserts in selected locations, for examplemade of carbon fiber for the outer sub-shell 22. Other adequatematerials can alternately be used for the inner sub-shell 24, including,but not limited to, any suitable type of injectable foam, for examplepolyurethane (PU) foam, expanded polyethylene (EPE), expandedpolystyrene (EPS), polyethylene (PE) foam, ethylene vinyl acetate (EVA),etc., and combinations thereof. Other adequate materials can alternatelybe used for the outer sub-shell 22, including, but not limited to, anysuitable type of thermoplastic material, for example polyethylene (PE),polypropylene (PP), polystyrene,(PS) polyvinyl chloride (PVC), acrylic,nylon, etc., and combinations thereof. Reinforcements such as fibers mayalternately be included throughout the whole outer sub-shell 22.Alternately, the outer and inner sub-shells 22, 24 may be made of asimilar or same material, for example a same type of polymer but withdifferent properties, or a same polymer with the same properties.

Still referring to FIGS. 2 and 3 a-3 b, the reinforcement sub-shell 26has a shape complementary to that of the other sub-shells 22, 24, andaccordingly includes a heel portion 26 a, an ankle portion 26 bconnected to the heel portion 26 a and shown here as including anoptional tendon guard, and two opposed side portions 26 c extending fromthe heel and ankle portions 26 a, 26 b. In the embodiment shown, thereinforcement sub-shell 26 does not include a substantial sole portion.The reinforcement sub-shell 26 is made of a material sufficiently rigidto maintain its tridimensional shape, and different from the materialsof the outer and inner sub-shells 22, 24. For example, in a particularembodiment, the reinforcement sub-shell 26 is made of any non-woven orsaturated felt generally used in shoemaking as reinforcements, or athermoplastic sheet made for example of polyethylene (PE), polypropylene(PP), polystyrene, polyvinyl chloride (PVC), acrylic, nylon, etc.

In the embodiment shown and with reference to FIGS. 3 a-3 b, thetridimensional shape of the ankle portions 22 b, 24 b, 26 b adjacent theside portions 22 c, 24 c, 26 c of the sub-shells 22, 24, 26 definesrecesses 38 on both sides of the shell 16 adjacent the connection withthe heel portions, and bulges 40 on both sides of the shell 16,extending upwardly from the recesses 38, such as to accommodate theshape of an ankle. In a particular embodiment, the recesses 38 andbulges 40 are asymmetrical to better accommodate the natural shape ofthe ankle.

Referring back to FIG. 1, in a particular embodiment the skate bootincludes a sole insert 20 embedded in or received in the skate bootshell 16. The holder 15 is connected to the sole insert 20 by one ormore fastener(s) 13 which extend through at least part of the thicknessof the sole portion 16 d of the skate boot shell 16, such as to form theconnection between the holder 15 and the skate boot shell 16. It isunderstood that the term “fastener” is intended to include anyappropriate type of mechanical fastening member including, but notlimited to, screws, rivets, nails, clips, staples, and any type ofcustom-made hardware or mechanical attachment. In a particularembodiment, the fasteners 13 are rivets. In a particular embodiment, theholder 15 is connected to the skate boot shell 16 only by thefastener(s) 13 engaged to the sole insert 20.

In a particular embodiment, the sole insert 20 is made of plastic;non-limiting examples include polypropylene (PP), polyethylene (PE),polyurethane (PU), polyvinyl chloride (PVC), nylon. The holder 15 isconnected to the boot shell 16 by the fasteners 13 extending through atleast part of the thickness of the sole portion 16 d of the skate bootshell 16 and connected to the sole insert 20, and accordingly the soleinsert 20 may provide increased structural strength for the boot shell16 at the connection.

In the embodiment shown in FIG. 3 a, the sole insert 20 is received overan inner surface of the skate boot shell 16, corresponding to an innersurface of the sole portion 24 d of the inner sub-shell 24. Although thereinforcement sub-shell 26 is shown as abutting the sole insert 20,alternately portions of the reinforcement sub-shell 26 may extend underthe sole insert 20, or over the sole insert 20. Alternately, the soleinsert 20 may be received between the inner sub-shell 24 and the outersub-shell 22.

In the embodiment shown in FIG. 3 b, the sole insert 20 is embedded inthe sole portion 24 d of the inner sub-shell 24. The insert 20 may bemade of a material more rigid than the material of the inner sub-shell24. Alternately, the insert 20 may be made of the same material as theinner sub-shell 24, of a material having a similar or same rigidity thanthe material of the inner sub-shell 24, or of a material less rigid thanthe material of the inner sub-shell 24. The sole insert 20 may beintegrated with the sole portion 24 d of the inner sub-shell 24 duringits manufacture.

FIG. 4 shows the sole insert 20 in accordance with a particularembodiment. The sole insert 20 includes a sole-shaped body, for exampleshaped as an insole reinforcement, including a solid perimeter 21 and aplurality of ribs 23 extending across the perimeter 21. The perimeter 21and ribs 23 frame zones of adjacent openings which are defined by thematerial of the sole insert 20 being configured in a mesh-like pattern,such as to form for example aligned honeycomb-shaped openings as shown;other configurations are also possible. A plurality of pods 36 aredefined on the bottom surface of the perimeter 21 and/or ribs 23. Eachpod 36 is shaped and disposed such as to receive one of the fasteners 13(FIG. 1) connected to the holder 15. The pods 36 may include holesdefined therethrough for receiving the fasteners 13, or may be solidsuch as to be pierced by the fasteners 13 when the holder 15 isconnected thereto through the sole portion of the skate boot shell 16.

In a particular embodiment, the sole insert 20 also includes adeformable connection member 37 extending from its bottom surface, forconnection with the toe cap 18, 118, as shown in FIG. 16 and as furtherdetailed below.

The body of the sole insert 20 also includes a central opening 27bordered by a top or inner perimeter surface 29, which in use faces awayfrom the inner surface of the skate boot shell 16—in other words, theinner perimeter surface 29 faces toward the foot of the wearer in use.The sole insert 20 includes a connector 31 received over the perimetersurface 29, and engaged thereto. In a particular embodiment, theconnector 31 is connected to the sole portion 16 d of the skate bootshell 16 independently of the holder 15 by at least one additionalfastener 33. In a particular embodiment, and as can also be seen in FIG.16, two screws or rivets 33 attach the connector 31 to the sole portion16 d of the skate boot shell 16, thereby retaining the sole insert 20 inthe skate boot shell 16 until the holder 15 is engaged thereto. Theconnector 31 may also be connected to the holder 15 through the skateboot shell 16, for example by a fastener received through a central hole35 of the connector 31.

In a particular embodiment, the connector 31 ensures the proper positionof the sole insert 20 within the skate boot shell 16, such as to alignthe pods 36 with the position of the fastener-receiving holes of theholder 15. One or more of the sub-shells may be fabricated with holes toreceive the additional fasteners 33 engaging the connector 31; in aparticular embodiment, the inner sub-shell 24 is molded with these holesbeing defined therein, such as to ensure a constant position for theholes skate boot shells 16 having the same size. Engagement of theconnector 31 with these predefined holes thus ensures a constantposition of the connector 31, and of the sole insert 20, for similarskates.

In a particular embodiment, the same body for the sole insert 20 may beused for two or more different boot sizes, for example for two sizes ofskate boot 12 differing by a half size, by changing the position of thesole insert 20 along the length of the skate boot shell 16. In aparticular embodiment, the two boot sizes differing by a half size (e.g.4 mm difference in overall length) are obtained with the same boot shell16, the same holder 15, and different sized toe caps 18. The position ofthe holder 15 is determined with respect to the overall length of theskate boot (e.g. centered with respect thereto) and accordingly, theposition of the holder 15 with respect to the boot shell 16 is differentbetween the two half sizes. Two different connectors 31 are thus usedfor the two half sizes, the two connectors having different positions ofthe holes for receiving the additional fasteners 33 engaging theconnector to the boot shell 16. Each connector 31 thus position the samebody of the sole insert 20 within the boot shell 16 in a respectiveposition corresponding to the overall skate boot size, in correspondencewith the position of the holder 15 for that size. Alternately, a singleconnector may be defined with holes positioned such as to be suitable toreceive the fasteners 33 for one of the half sizes in one orientation ofthe connector and for the other of the half sizes in anotherorientation, for example with the two orientations being offset by 180degrees with respect to one another. Other configurations are alsopossible.

In another embodiment, the sole insert 20 is provided as a monolithicelement. Such a configuration may be particularly, although notexclusively, be suited for embodiments where the sole insert 20 isembedded in the inner sub-shell 24, such as shown in FIG. 3 b. The samemonolithic sole inserts can also be used in different skate boot sizes,for example for two sizes of skate boot 12 differing by a half size,through different positions within the skate boot shell as discussedabove.

Referring to FIG. 5, an alternate configuration for the sole insert 120is shown, including a front U-shaped portion 130 and a rear U-shapedportion 132 oriented with the open end of the “U” facing away from oneanother, and which are interconnected by a member 134. The portions 130,132 each include a plurality of pods 136 for receiving the fasteners 13.Such a configuration may be particularly, although not exclusively, besuited for embodiments where the sole insert 120 is embedded in theinner sub-shell 24, such as shown in FIG. 3 b.

It is understood that the particular sole insert configurations shownare provided for illustrative purposes only, and that the configurationof the sole insert may vary. For example, the sole insert 20, 120 may beprovided in two or more sections which may be unconnected to oneanother.

As will be detailed further below, each of the sub-shells 22, 24, 26 isshaped to its tridimensional shape prior to being interconnected to oneanother, although the sub-shells 22, 24, 26 may be shaped together. Insome embodiments, the sub-shells 22, 24, 26 are shaped separately, andinserted in one another before being interconnected.

In a particular embodiment, and referring to FIG. 6, the outer sub-shell22 is first formed from one or more layers of the outer sub-shellmaterial(s) disposed in a flat configuration. The outer sub-shellmaterials include at least a base material in a formable state, i.e. astate in which it is or is able to become flexible to be manipulated toobtain a different form, after which it is able to become rigid (whetherreversibly or permanently) to retain this different form. The outersub-shell materials may also include flexible materials (e.g.reinforcement fibers) which are retained in the final form by the basematerial once rigid. In a particular embodiment, the formable materialis thermoplastic, and accordingly is flexible or becomes flexible underheat to be manipulated to obtain a different form, and becomes rigidonce cooled down to retain this form. Advantageously, in a particularembodiment, the use of thermoplastic material may allow the user toreheat the skate boot to change its shape to conform more closely to aparticular foot configuration. Alternately, the formable material may bea thermoset material in a partially uncured state (e.g. prepreg),flexible and able to be manipulated to obtain a different form, andbecoming rigid once cured to retain this form.

In the embodiment shown, a base layer 50 made of thermoformable resin isprovided, and additional smaller reinforcement pieces 52 including forexample carbon fibers are provided on the base layer 50 (shown here inthe tendon area of the ankle portion 22 b, in the ankle portions 22 c,and on the heel portion 22 d on opposite sides of the foot) to providereinforcement). The layers 50, 52 may include indentations and/or slots54 to facilitate folding into the desired tridimensional shape. Thelayers 50, 52 may be pressed in the flat configuration, for exampleunder heat, to connect the different layers 50, 52 together, as long asthe pressed material remains formable to be able to be formed or bent toconform to the desired tridimensional shape of the outer sub-shell 22.In the embodiment shown, the layers 50, 52 defines the heel, ankle andside portions 22 a, 22 b, 22 c, as well as part of the sole portion 22d. It is understood that the particular configuration shown for thelayer(s) 50, 52 is provided as an example only and that variations arepossible.

Referring to FIG. 7, the layer(s) 50, 52 are then formed or bent toconform to a mold surface 56 complementary to the heel, ankle, side andsole portions 22 a, 22 b, 22 c, 22 d. In a particular embodiment, thethermoformable layer(s) 50, 52 are heated to help them conform moreeasily to the mold surface 56. In the embodiment shown, the mold is afemale mold, although alternately a male mold surface may be used. Aformable sole element 58 (for example made of the same material as thebase layer 50) is placed over the formed layers 50, 52, in contact withthe first heel, ankle and side portions 22 a, 22 b, 22 c and over thepart of the sole portion 22 d defined by the layers 50, 52; in theembodiment shown the sole element 58 is placed inside the boot shapeformed by the formed layers 50, 52, but alternately it may be placedagainst the base layer 50 outside the boot shape. Referring to FIG. 8,the material is then heated and pressed against the mold surface 56,shown here as formed by three complementary mold portions 62 a, 62 b, 62c, using for example an inflatable bladder 60. In a particularembodiment, the final thickness of the outer sub-shell 22 is controlledthrough controlling of the temperature at which the thermoformablelayer(s) 50, 52 are heated during this forming process, by increasingthe temperature when the thickness needs to be lower, and reducing thetemperature when the thickness needs to be greater. The material isforced into the desired boot shape (and cured if it was in a partiallyuncured state) and the sole element 58 is fused with the remainder ofthe outer sub-shell 22. Once the sub-shell 22 is cooled, it issufficiently rigid to retain its tridimensional shape.

In a particular embodiment, and referring to FIG. 9, the inner sub-shell24 is shaped by injection molding in a mold cavity formed betweencomplementary female and male mold portions 64 a, 64 b which are shapedto define the heel, ankle, side and sole portions 24 a, 24 b, 24 c, 24d. In an embodiment where the sole insert 20, 120 is integrated into theinner sub-shell 24 such as shown in FIG. 3 b, the sole insert 20, 120 isplaced within the mold cavity prior to injecting the material of theinner sub-shell 24, such as to be integrated therewith.

In a particular embodiment, and referring to FIG. 10, the reinforcementsub-shell 26 is first formed from one or more layers 70 of thereinforcement material in a flat configuration and in a formable state,for example made of thermoplastic material. In the embodiment shown, asingle layer 70 is provided. Alternately, multiple layers 70 may beprovided; the layers may be made of the same material, or two or more ofthe layers maybe made of or include different materials from oneanother. Although not shown, the layer(s) 70 may include indentationsand/or slots to facilitate folding into the desired tridimensionalshape. The layer(s) 70 may also be formed of multiple pieces. In theembodiment shown, the layer(s) 70 define the heel, ankle and sideportions 26 a, 26 b, 26 c.

Referring to FIG. 11, the layer(s) 70 are heated and then formed or bentto conform to a mold surface 72 complementary to the heel, ankle andside portions 26 a, 26 b, 26 c; alternately, the layer(s) 70 may beheated during engagement with the mold surface 72. In the embodimentshown, the mold is a male mold defined by a tridimensional boot shape74, although alternately a female mold surface may be used. The materialis pressed against the mold surface 72, for example using an inflatablebladder 76. Once the reinforcement sub-shell 26 is cooled, it issufficiently rigid to retain its tridimensional shape.

It should be noted that the particular methods of manufacture shown anddescribed for the sub-shells 22, 24, 26 are provided as an example only,and that alternate methods are also considered.

For example, the inner sub-shell 24 may be formed from one or morelayers of the inner sub-shell material in a flat configuration and in aflexible state, for example at least partially uncured, and then byforming or bending and pressing the heated layer(s) against a femalemold surface 56, such as shown for example in FIG. 8, or against a malemold surface 72, such as shown for example in FIG. 11, after which theinner sub-shell 24 is cooled and retains its tridimensional shape. It isunderstood that each method described for each of the sub-shells 22, 24,26 can be applied to the other sub-shells 22, 24, 26.

In another embodiment, the inner sub-shell 24 is manufactured by loadingrandomly arranged particles of an expanded material into a mold througha stream of a transport material, which may be liquid and/or steam, orpowder that behaves like a liquid; in a particular embodiment, thetransport material is water. The particles may be loaded into the moldunder pressure to compress the particles in order to achieve a highermaterial density. The transport material may be at least partially orentirely removed from the mold after the introduction of the expandedmaterial, or may remain in part or in whole to form part of the curedmaterial. By means of pressure and/or heat and/or steam treatment, theparticles of the expanded material combine by slightly melting theirsurfaces and/or undergo chemical bonding to form the inner sub-shellhaving the desired tridimensional shape. Additional details on thismethod of manufacture are provided in co-pending application Ser. No.14/178,581 filed on Feb. 12, 2014, which is incorporated herein byreference in its entirety.

In another embodiment, the sub-shells 22, 24 (and optionally 26), areshaped together prior to being bonded. A flat member including at leastone layer of the material of each of the outer and inner sub-shells 22,24 (and, when provided, of the reinforcement sub-shell 26) is formed,for example having a configuration similar to that shown in FIG. 6. Thelayers are heated, prior and/or while being formed or bent to conform toa mold surface, for example by pressing the heated layers against afemale mold surface 56, such as shown for example in FIG. 8, or againsta male mold surface 72, such as shown for example in FIG. 11. Thetemperature of the layers is selected such as to avoid binding thelayers together, thus allowing relative movement between the differentmaterials as they are being formed or bent. Once the sub-shells 22, 24(and optionally 26) have the desired tridimensional shape, they are theninterconnected. Alternately, the sub-shells 22, 24 (and optionally 26)may be laminated as flat members, and the laminated flat members areheated, prior and/or while being formed or bent to conform to a moldsurface, for example by pressing the heated layers against a female moldsurface 56, such as shown for example in FIG. 8, or against a male moldsurface 72, such as shown for example in FIG. 11, such as to form thebonded tridimensional sub-shells 22, 24 (and optionally 26).

In a particular embodiment, the sub-shells 22, 24 (and optionally 26),once shaped, are bonded together through lamination, with the innersub-shell 24 received in the outer sub-shell 22 and with the outersurface of the inner sub-shell 24 in alignment with the inner surface ofthe outer sub-shell 22. The lamination is performed by applying pressureon one of the sub-shells 22, 24 toward the other, against a moldsurface.

Referring to FIG. 12 a, in a particular embodiment, the assembledsub-shells 22, 24 (and optionally 26) forming the boot shell 16 arereceiving within a female mold 80 defining a mold surface 82complementary to an outer surface of the outer sub-shell 22, andpressure is applied against the mold surface 82 using an inflatablebladder 84 received within the inner sub-shell 24 (and, when present,within the reinforcement sub-shell 26).

Referring to FIG. 12 b, in another embodiment, a tridimensional bootshape 86 defining a male mold surface 88 complementary to an innersurface of the assembled sub-shells 22, 24 (and optionally 26) formingthe boot shell 16 is received within the shell 16, and pressure isapplied against the mold surface 88 using an inflatable bladder 90surrounding the assembled shell 16.

In a particular embodiment, the assembled sub-shells 22, 24 (andoptionally 26) are heated prior to being received against the moldsurface. In addition or alternately, the assembled sub-shells 22, 24(and optionally 26) may be heated when received against the moldsurface.

In a particular embodiment, the sub-shells 22, 24 (and optionally 26)are interconnected using adhesive prior to being heated and pressedagainst the mold surface.

In embodiments where the inner sub-shell 24 is not formed with a soleportion 24 d, the lamination process may include inserting a soleportion within the inner sub-shell 24 prior to interconnecting thesub-shells 22, 24 (and optionally 26), the sole portion being connectedto the sub-shells during interconnection of the sub-shells.

In a particular embodiment where the sub-shells are made ofthermoplastic material, the assembled and laminated boot shell 16 may bere-shaped after the lamination process, for example to create anembossed feature, to change the geometry in a specific area, to add afeature facilitating connection with other pieces of the skate boot,etc. The shell 16 is heated prior to and/or during being pressed againsta mold surface complementary to the feature(s) to be added to the shapeof the shell 16. Referring to FIG. 13 a, a press 100 in accordance witha particular embodiment is shown. The press includes dies 102 eachdefining a mold surface complementary to the feature(s) to be shaped inthe boot shell 16. In a particular embodiment, the dies 102 areinterchangeable, such as to be able to create different features withthe press. The dies 102 define mold surfaces facing one another betweenwhich a slot 104 is defined, in which the walls of the shell 16 arereceived. FIG. 13 b shows the boot shell 16 engaged with the dies 102.The boot shell 16 may be heated before and/or during being pressed. Thedies 102 sandwich the walls of the shell 16 and apply pressure againstone another on both sides each wall to conform the walls to the shape ofthe dies 102, thus creating the new geometry. Once cooled, the bootshell 16 retains this new geometry.

Referring to FIG. 14, in a particular embodiment, the boot shell 16 isreshaped to add an indent or step 110 along the upper edges of thelaminated shell 16. It is understood that features of any otherappropriate type and/or location may be created, and that the shell 16may be pressed against mold surface(s) using any other appropriatemethod, including but not limited to the methods discussed above.

Referring to FIG. 15 a, once the skate boot shell 16 is formed, the toecap 18 is engaged to front ends of the opposed side portions 16 c and ofthe sole portion 16 d, and connected to the skate boot shell 16. In theembodiment shown, the front ends of the side portions 16 c and of thesole portion 16 d form a recessed portion 42 inwardly recessed withrespect to the outer surfaces of the side portions 16 c and of the soleportion 16 d, and this recessed portion 42 is received inside the toecap 18. In the particular embodiment shown, the rear edges of the toecap 18 abut the shoulder formed by the transition between the recessedportion 42 and the adjacent outer surface of the un-recessed part of theside portions 16 c and of the sole portion 16 d, and the outer surfacesof the toe cap 18 are in alignment with the outer surfaces of the sideportions 16 c and of the sole portion 16 d such as to define an evenouter surface at the transition between the shell 16 and toe cap 18. Therecessed portion 42 may be in contact with inner surfaces of the toe cap18, for example to define an interference fit. The toe cap 18 isconnected to the front ends of the opposed side portions 16 c byfasteners 44 extending through the wall of the toe cap 18 and throughthe recessed portion 42. In a particular embodiment, the fasteners 44are rivets. Other types of fasteners can alternately be used.

The configuration of the toe cap 18 and recessed portion 42 areparticularly, although not exclusively, suitable for assembly with aboot shell 16 formed from one or more tridimensional sub-shells asdiscussed herein, as the toe cap 18 can be attached to the boot shellthrough methods other than sewing (including, but not limited to,fasteners as discussed and/or adhesive), since in at least someembodiments the tridimensional configuration of the boot shell 16 canmake it difficult and/or impractical to use a conventional sewing methodto attach a toe cap to the boot shell 16.

The toe cap 18 further includes a tongue tab 48 extending rearwardlyfrom a top surface of the toe cap 18, for engagement with a tongue 19 ofthe skate boot 12. In a particular embodiment, the end of the tongue 19is stitched to the tongue tab 48. Other types of connections andconfigurations are also possible.

In a particular embodiment, the sole insert 20 extends forwardly out ofthe skate boot shell 16 and is received within the toe cap 18. As can beseen in FIG. 16, the front end of the sole insert 20 is connected to thetoe cap 18 by the deformable connection member 37 being received in acomplementary hole 46 defined through a bottom surface of the toe cap18. In the embodiment shown, the connection member 37 includes four legs39 each having a radially outwardly extending flange 41, such that theouter diameter defined by the flanges 41 is greater than the diameter ofthe hole 46. The legs 39 are plastically deformable to bring them closerto one another such as to be able to insert the legs 39 through the hole46 until the flanges 41 are out of the hole 46 and the legs 39 regaintheir original position. The flanges 41 abut the perimeter of the hole46 and prevent the sole insert 20 from being disengaged from the toe cap18 unless the legs 39 are again plastically deformed. Otherconfigurations are also possible.

In a particular embodiment, the sole insert 20, 120 received inside andconnected to the toe cap 18 provides for increased stability and/or footsupport, allowing the toe cap to react to the movements of the foottogether with the sole insert 20, 120 on or over which the foot issupported.

Referring to FIG. 15 b, in another embodiment, the toe cap 118 hasopposed side wall portions 118 a extending rearwardly, inwardly recessedfrom a remainder of the toe cap's outer surface. These wall portions 118a are sized to be engaged inside the boot shell 16 against its innersurface and retained through an interference fit. Fasteners, for examplerivets, may interconnect the wall portions 118 a and the boot shell 16.

In a particular embodiment, different toe caps 18, 118 having differentsizes can be engaged to the same boot shell 16, for example two toe capssized to define different half-sizes for the boot 12. The same bootshell 16 may thus be used for two sizes of skate boot 12 differing by ahalf size, by selecting the appropriate toe cap 18, 118 to be engagedtherewith.

The above description is meant to be exemplary only, and one skilled inthe art will recognize that changes may be made to the embodimentsdescribed without departing from the scope of the invention disclosed.For example, the sole insert 20, 120 and/or toe cap 18, 118 may be usedwith a skate boot shell formed as a single shell, as opposed to formedby a plurality of interconnected sub-shells as described and shown; theskate boot shell formed by the plurality of interconnected sub-shellsmay be provided without the sole insert 20, 120 and/or without the toecap 18, 118 or with a differently configured toe cap/toe portion. Othermodifications other than those discussed which fall within the scope ofthe present invention will be apparent to those skilled in the art, inlight of a review of this disclosure, and such modifications areintended to fall within the appended claims.

1. A skate comprising: a tridimensional skate boot shell including aheel portion, an ankle portion connected to the heel portion, twoopposed side portions extending from the heel and ankle portions, and asole portion connected to the heel, ankle and side portions; a soleinsert embedded in or received in the skate boot shell such that atleast part of a thickness of the sole portion is defined under the soleinsert; and a holder under the skate boot shell configured for retaininga ground-engaging skate element, the holder connected to the sole insertby at least one fastener extending through the at least part of thethickness of the sole portion.
 2. The skate as defined in claim 1,wherein the holder is connected to the skate boot shell only by the atleast one fastener engaged to the sole insert.
 3. The skate as definedin claim 1, wherein the sole insert is received over an inner surface ofthe skate boot shell.
 4. The skate as defined in claim 3, wherein thesole insert includes a sole-shaped body having an opening definedtherethrough bordered by a perimeter surface facing away from the innersurface of the skate boot shell, and a connector received over theperimeter surface, the connector connected to the sole portion of theskate boot shell independently of the holder by at least one additionalfastener.
 5. The skate as defined in claim 4, wherein the at least onefastener connected to the holder includes a first fastener engaged tothe connector and a plurality of fasteners engaged to the sole-shapedbody.
 6. The skate as defined in claim 1, wherein the skate boot shellincludes at least a first sub-shell received in and connected to asecond sub-shell, the sole insert being received over an inner surfaceof one of the first and second sub-shells.
 7. The skate as defined inclaim 1, wherein the skate boot shell includes at least a firstsub-shell received in and connected to a second sub-shell, the soleinsert being embedded in the first sub-shell.
 8. The skate as defined inclaim 1, wherein the sole insert is made of plastic.
 9. The skate asdefined in claim 1, wherein the sole insert includes a perimeter and aplurality of ribs extending across the perimeter, the perimeter and ribsframing a plurality of zones of adjacent openings.
 10. The skate asdefined in claim 1, further comprising a toe cap connected to the skateboot shell and engaged to front ends of the opposed side portions and ofthe sole portion, the sole insert extending forwardly out of the skateboot shell and into the toe cap, a front end of the insert beingconnected to the toe cap.
 11. The skate as defined in claim 10, whereinthe front ends of the opposed side portions and of the sole portion arereceived inside the toe cap.
 12. The skate as defined in claim 10,wherein the toe cap is connected to the front ends of the opposed sideportions by rivets.
 13. A method of manufacturing a skate boot, themethod comprising: providing a tridimensional skate boot shell having aheel portion, an ankle portion connected to the heel portion, and twoopposed side portions extending from the heel and ankle portions, theskate boot shell having a sole insert embedded therein or receivedtherein such that at least part of a thickness of the sole portion isdefined under the sole insert; and attaching a holder configured forretaining at least one ground-engaging skate element under the skateboot shell by connecting the holder to the sole insert with at least onefastener extending through the at least part of the thickness of thesole portion.
 14. The method as defined in claim 13, wherein providingthe tridimensional skate boot shell comprises: shaping a tridimensionalouter sub-shell; shaping a tridimensional inner sub-shell having anouter surface complementary to an inner surface of the outer sub-shell;bonding the inner sub-shell inside the outer sub-shell; and placing thesole insert over an inner surface of the skate boot shell.
 15. Themethod as defined in claim 14, wherein bonding the inner sub-shellinside the outer sub-shell is performed through lamination after theouter and inner sub-shells are shaped.
 16. The method as defined inclaim 13, wherein providing the tridimensional skate boot shellcomprises: shaping a tridimensional outer sub-shell; shaping atridimensional inner sub-shell having an outer surface complementary toan inner surface of the outer sub-shell, including embedding the soleinsert within the inner sub-shell; and bonding the inner sub-shellinside the outer sub-shell.
 17. The method as defined in claim 13,further comprising: engaging a toe cap to front ends of the opposed sideportions and of the sole portion, including receiving a front end of thesole insert inside the toe cap; and connecting the toe cap to the skateboot shell and to the front end of the sole insert.
 18. The method asdefined in claim 17 wherein engaging the toe cap to the front ends ofthe opposed side portions and of the sole portion includes inserting thefront ends of the opposed side portions and of the sole portion withinthe toe cap.
 19. The method as defined in claim 17, wherein connectingthe toe cap to the skate boot shell includes connecting the toe cap tothe front ends of the opposed side portions with rivets.
 20. The methodas defined in claim 17, further comprising, prior to engaging the toecap, selecting the toe cap from at least two toe caps engageable to theskate boot shell, the two toe caps having different sizes.